scholarly journals Response of Sweet Sorghum Lines to Stalk Pathogens Fusarium thapsinum and Macrophomina phaseolina

Plant Disease ◽  
2016 ◽  
Vol 100 (5) ◽  
pp. 896-903 ◽  
Author(s):  
Deanna L. Funnell-Harris ◽  
Patrick M. O’Neill ◽  
Scott E. Sattler ◽  
Melinda K. Yerka
Keyword(s):  
Sweet Sorghum ◽  
Macrophomina Phaseolina ◽  
Lesion Length ◽  
Lesion Development ◽  
Stalk Rot ◽  
Yield And Quality ◽  
Fusarium Thapsinum ◽  
Biochemical Analyses ◽  
Sorghum Bicolor L

Sweet sorghum (Sorghum bicolor (L.) Moench) has potential for bioenergy. It is adapted to a variety of U.S. locations and the extracted juice can be directly fermented into ethanol. However, little research on fungal stalk rots, diseases that pose serious constraints for yield and quality of juice and biomass, has been reported. A greenhouse bioassay was designed to assess charcoal rot (Macrophomina phaseolina) and Fusarium stalk rot (Fusarium thapsinum) in plants at maturity, the developmental stage at which these diseases are manifested. Multiple plantings of a susceptible grain line, RTx430, were used as a control for variation in flowering times among sweet sorghum lines. Lesion length measurements in inoculated peduncles were used to quantify disease severity. Sweet sorghum lines ‘Rio’ and ‘M81E’ exhibited resistance to F. thapsinum and M. phaseolina, respectively; and, in contrast, ‘Colman’ sorghum exhibited susceptibility to both pathogens. Lesion development over time in Colman was monitored. These results will enhance molecular and biochemical analyses of responses to pathogens, and breeding stalk-rot-resistant sweet sorghum lines.

scholarly journals Response of Sorghum Enhanced in Monolignol Biosynthesis to Stalk Rot Pathogens

Plant Disease ◽  
2019 ◽  
Vol 103 (9) ◽  
pp. 2277-2287 ◽  
Author(s):  
Deanna L. Funnell-Harris ◽  
Scott E. Sattler ◽  
Patrick M. O’Neill ◽  
Tammy Gries ◽  
Hannah M. Tetreault ◽  
...  
Keyword(s):  
Phenylalanine Ammonia Lyase ◽  
Energy Content ◽  
Macrophomina Phaseolina ◽  
The Other ◽  
Wild Type ◽  
Stalk Rot ◽  
Monolignol Biosynthesis ◽  
Coumarate:Coa Ligase ◽  
Fusarium Thapsinum ◽  
Sorghum Bicolor L

To increase phenylpropanoid constituents and energy content in the versatile C4 grass sorghum (Sorghum bicolor [L.] Moench), sorghum genes for proteins related to monolignol biosynthesis were overexpressed: SbMyb60 (transcriptional activator), SbPAL (phenylalanine ammonia lyase), SbCCoAOMT (caffeoyl coenzyme A [CoA] 3-O-methyltransferase), Bmr2 (4-coumarate:CoA ligase), and SbC3H (coumaroyl shikimate 3-hydroxylase). Overexpression lines were evaluated for responses to stalk pathogens under greenhouse and field conditions. Greenhouse-grown plants were inoculated with Fusarium thapsinum (Fusarium stalk rot) and Macrophomina phaseolina (charcoal rot), which cause yield-reducing diseases. F. thapsinum-inoculated overexpression plants had mean lesion lengths not significantly different than wild-type, except for significantly smaller lesions on two of three SbMyb60 and one of two SbCCoAOMT lines. M. phaseolina-inoculated overexpression lines had lesions not significantly different from wild-type except one SbPAL line (of two lines studied) with mean lesion lengths significantly larger. Field-grown SbMyb60 and SbCCoAOMT overexpression plants were inoculated with F. thapsinum. Mean lesions of SbMyb60 lines were similar to wild-type, but one SbCCoAOMT had larger lesions, whereas the other line was not significantly different than wild-type. Because overexpression of SbMyb60, Bmr2, or SbC3H may not render sorghum more susceptible to stalk rots, these lines may provide sources for development of sorghum with increased phenylpropanoid concentrations.

scholarly journals Aggressiveness to Mature Maize Plants of Fusarium Strains Differing in Ability to Produce Fumonisin

Plant Disease ◽  
1999 ◽  
Vol 83 (7) ◽  
pp. 690-693 ◽  
Author(s):  
Douglas J. Jardine ◽  
John F. Leslie
Keyword(s):  
Fusarium Moniliforme ◽  
Fusarium Verticillioides ◽  
Inbred Lines ◽  
Lesion Length ◽  
Stalk Rot ◽  
Maize Inbred Lines ◽  
Maize Plants ◽  
The Mean ◽  
Fusarium Thapsinum

Four strains each of Fusarium moniliforme (syn. Fusarium verticillioides) and Fusarium thapsinum were tested for aggressiveness toward two maize inbred lines grown under greenhouse conditions. All strains induced significantly longer stalk lesions than those observed in the controls. Mean lesion length resulting from inoculation with strains of F. moniliforme was longer than the mean lesion length resulting from inoculation with strains of F. thapsinum. Within each species, however, there was a broad range of lesion lengths observed, and all tested strains of both species probably should be regarded as potential pathogens of maize. No isolate × inbred interaction was detected. Fumonisins may play a role in aggressiveness, but under our conditions, stalk rot and the ability to produce fumonisins in vitro were not correlated.

scholarly journals Physiological quality of sweet sorghum [Sorghum bicolor (L.) Moench.] seeds in response to planting density in semi-arid region

2017 ◽  
Vol 11 (06) ◽  
pp. 694-700 ◽  
Author(s):  
Tatiana Maria da Silva ◽  
◽  
Maria de Fátima de Queiroz Lopes ◽  
Alexandre Bosco de Oliveira ◽  
André Luis da Silva Parente Nogueira ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Arid Region ◽  
Sweet Sorghum ◽  
Planting Density ◽  
Physiological Quality ◽  
Semi Arid Region ◽  
Sorghum Bicolor L ◽  
Semi Arid

scholarly journals Effect of Planting Dates on the Growth, Yield and Quality of Three Cultivars of Sorghum (Sorghum bicolor L. Moench)

2021 ◽  
Vol 904 (1) ◽  
pp. 012019
Author(s):  
H A Ajaj ◽  
Y A Mohammed ◽  
A AM Alrubaya ◽  
A MS Addaheri
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Block Design ◽  
Growth Yield ◽  
Spring Season ◽  
Planting Dates ◽  
Yield And Quality ◽  
Randomized Complete Block Design ◽  
Sorghum Bicolor L

Abstract A field study was carried out during the spring season of 2017 in the fields of a farmer in the district of Habbaniyah, which is 70 km west of Baghdad, to study the effect of three planting dates (15 March, 1 April and 15 April) on the growth, yield and quality of three cultivars of sorghum (Babel, Warka and Rabeh). The implementation of the experiment was according to a randomized complete block design (R.C.B.D) with split-plot arrangement with three replications. The results of the experiment indicated that the cultivar Rabeh was superior in most of the studied traits such as leaf area (3968 cm2), number of grains per head (2659.00 grains head-1), weight of grains per head (63.41 g) and grain yield (7.44 ton ha-1), while the Babel variety was superior in the percentage of protein (12.21%). As for planting dates, the date of April 1 was superior in most of the studied traits, such as leaf area (3635.33 cm2), number of grains per head (2670.33 grains head-1), weight of grains per head (62.12 g), grain yield (7.55 ton ha-1) and the percentage of protein (11.49%).

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